Table 1.

Clinicopathological Characteristics of Patients

Variables		n
All patients		29
Age	<65	8
	≥65	21
Sex	Male	19
	Female	10
Tumor histology	Adenocarcinoma	7
	Non-adenocarcinoma	22
T stage	T1/T2	12
	T3/T4	17
N stage	N0/N1	11
	N2/N3	18
Clinical stage	III	7
	IV	22
Performance status	0/1	26
	2	3
Smoking status	Never	4
	Ever	25
Line	1st	14
	2nd and later	15